Re: [RFC] 2.6.0 EDD enhancements

[James Bottomley <James.Bottomley@steeleye.com>]

On Fri, 2003-12-19 at 14:01, Matt Domsch wrote:
> @@ -639,11 +629,11 @@
>  	pci_dev = edd_get_pci_dev(edev);
>  	if (pci_dev) {
>  		struct scsi_device * sdev = edd_find_matching_scsi_device(edev);
> -		if (sdev && get_device(&sdev->sdev_driverfs_dev)) {
> +		if (sdev && get_device(&sdev->sdev_gendev)) {
>  			rc = sysfs_create_link(&edev->kobj,
> -					       &sdev->sdev_driverfs_dev.kobj,
> +					       &sdev->sdev_gendev.kobj,
>  					       "disc");
> -			put_device(&sdev->sdev_driverfs_dev);
> +			put_device(&sdev->sdev_gendev);

This is a bit nasty...you're assuming a lot of hidden knowledge about
the layout of sysfs objects in scsi_device in this code.

The current(*) way you should be doing this is to use scsi_device_get()
in your edd_match_scsi_dev() and do a scsi_device_put() after creating
the link...that should be hotplug robust.

(*) since SCSI hotplug is a work in progress, this may change...

James